import axios from "axios";
import { Message } from "element-ui";
import router from "../router/index";

const instance = axios.create({
  baseURL: "http://localhost:8088",
  timeout: 30 * 1000,
});

instance.interceptors.request.use(
  (config) => {
    let token = sessionStorage.getItem("Auth-token");
    if (token) {
      config.headers["Auth-token"] = token;
    }
    return config;
  },
  (err) => {
    console.error("请求连接器出错: ", err);
    Promise.reject(err);
  }
);

instance.interceptors.response.use(
  (resp) => {
    return resp.data;
  },
  (error) => {
    /***** 接收到异常响应的处理开始 *****/
    if (error && error.response) {
      // 1.公共错误处理
      // 2.根据响应码具体处理
      switch (error.response.status) {
        case 400:
          error.message = "错误请求";
          break;
        case 401:
          sessionStorage.removeItem("userInfo");
          sessionStorage.removeItem("Auth-token");
          // location.reload();
          error.message = "未授权，请重新登录";
          Message.error(error.message);
          if (router.currentRoute.path !== "/index") {
            router.push({ path: "/index" });
          }
          break;
        case 403:
          error.message = "拒绝访问";
          break;
        case 404:
          error.message = "请求错误,未找到该资源";
          window.location.href = "/#/NotFound";
          break;
        case 405:
          error.message = "请求方法未允许";
          break;
        case 408:
          error.message = "请求超时";
          break;
        case 500:
          error.message = "服务器端出错";
          break;
        case 501:
          error.message = "网络未实现";
          break;
        case 502:
          error.message = "网络错误";
          break;
        case 503:
          error.message = "服务不可用";
          break;
        case 504:
          error.message = "网络超时";
          break;
        case 505:
          error.message = "http版本不支持该请求";
          break;
        default:
          error.message = `连接错误${error.response.status}`;
      }
    } else {
      // 超时处理
      if (JSON.stringify(error).includes("timeout")) {
        Message.error("服务器响应超时，请刷新当前页");
      }
      error.message = "连接服务器失败";
    }
    /***** 处理结束 *****/
    //如果不需要错误处理，以上的处理过程都可省略
    return Promise.resolve(error.response);
  }
);

export default instance;
